It depends on your rocker arms if that will work or not
if their stock type iron adjusters with oil slots in the adjuster make sure they will still oil the valve tips and adjuster cups
Harland Sharps and some other aluminum full roller rocker arm (not extruded aluminum rockers, ) want a certain amount of adjuster threads exposed under the rocker arms to make sure they oil the pushrods correctly
I would contact the rocker arm maker and ask them to be safe